Craig N Posted November 15, 2022 Author Share Posted November 15, 2022 54 minutes ago, mrsmackpaul said: If you keep on just poking along like you are you might be surprised at just what can be achieved with out spending bugger all Nice and steady, you may get away with no sleeves or pistons or maybe you will need just one or two Paul 51 minutes ago, Joey Mack said: How about 6 new set of rings? just because... any thought's? jojo With luck I’ll have time tomorrow to pull the heads. I’m anxious to see what’s under there!! Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/8/#findComment-515232 Share on other sites More sharing options...
Craig N Posted November 15, 2022 Author Share Posted November 15, 2022 2 minutes ago, Joey Mack said: I am really hoping you find minimal damage.. and I'm glad you are opening it up to look inside as well... I may be repeating myself, but I have been watching your post.. and I'm pulling for you.. jojo Believe me, I appreciate your support!! There’s not a ton of us who are into these old trucks. I’m fortunate that I’ve connected with a group of guys who are willing to help and spread their experiences and knowledge!! Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/8/#findComment-515234 Share on other sites More sharing options...
Joey Mack Posted November 15, 2022 Share Posted November 15, 2022 (edited) Can I get an, Amen !!! Edited November 15, 2022 by Joey Mack more content needed Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/8/#findComment-515235 Share on other sites More sharing options...
mechohaulic Posted November 15, 2022 Share Posted November 15, 2022 On 11/12/2022 at 5:15 PM, Mark T said: Now a CNC machine of some type can do what was once astronomically expensive work for basically nothing. Newer oils. Whole different thing in ways than 35 or 40 years ago even. ALOT DIFFERENT😁 Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/8/#findComment-515237 Share on other sites More sharing options...
mowerman Posted November 15, 2022 Share Posted November 15, 2022 I had just thought of scratching up the sleeves with a honer set of rings and gaskits But then again too much compression would put more stress on already tired wrist pins but you could try it at least it’s not a vehicle that you are depending on for work every day right?.. bob Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/8/#findComment-515239 Share on other sites More sharing options...
Craig N Posted November 15, 2022 Author Share Posted November 15, 2022 (edited) 6 minutes ago, mowerman said: I had just thought of scratching up the sleeves with a honer set of rings and gaskits But then again too much compression would put more stress on already tired wrist pins but you could try it at least it’s not a vehicle that you are depending on for work every day right?.. bob I wouldn’t mind freshening it up a bit. A good hone and new pistons, rings, wrist pins and bearings wouldn’t be the worst I guess. I’ll do what it takes to get it running, for the most part. Realllllllly hoping it doesn’t need sleeves though. That might be where I draw the line, but I’m not there yet, there’s still hope haha. Yeah, this is just a toy, it won’t be pulling anything heavy, if anything at all. And if it does, it won’t be for long at least. I wouldn’t mind getting a tag along for my old Massey Ferguson backhoe, but it’s not really necessary and probably won’t happen anyway. Edited November 15, 2022 by Craig N Spelling Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/8/#findComment-515240 Share on other sites More sharing options...
mechohaulic Posted November 15, 2022 Share Posted November 15, 2022 On 11/13/2022 at 10:43 AM, fjh said: We do our best! Something to note when installing studs its recommended you bottom the bottom the stud and back it out a half turn ! not sure why the fine thread on the top does a better job of holding the heads down than any type of coarse thread! in my mind That said the 866 engine was a fine thread bolt if I remember correctly and they had issues with head gasket leaks! So who knows I could be misguided in my thoughts here! This maybe the reason Mack when to Coase thread in more current engines I don't know!? Been that way ever since! that may be the reason for the aforementioned instruction! So it won't hurt to heed that mention! Something else check them injectors you pulled and make sure the washers are stuck to them if Not Go Searching! just sayin!😅 Backing the studs out 1/2 turn was to allow for expansion under heat/ pressure. "in the day"it was common to lube the head studs. when the studs were installed and bottomed out ; thinking put them in tight was better:: turned out to be incorrect.. oil was in the bottom of the stud hole making a stud seem tight , in some cases (enough to bring notice) damage was done ; mostly head studs loosening up and gasket failure. have heard stories of head damage . 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/8/#findComment-515241 Share on other sites More sharing options...
mowerman Posted November 15, 2022 Share Posted November 15, 2022 There you go bud I already see you standing there with your head up high . Bob Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/8/#findComment-515242 Share on other sites More sharing options...
Joey Mack Posted November 15, 2022 Share Posted November 15, 2022 just curious,,, when you install the nuts on the studs, and the stud turns/tighten up, what do you do about that? the studs dont have a screwdriver slot on top, so you can adjust them before you put torque on the nuts.. Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/8/#findComment-515243 Share on other sites More sharing options...
mowerman Posted November 15, 2022 Share Posted November 15, 2022 Well coming from a guy that did not know that I don’t think they’re going to turn enough to worry about it Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/8/#findComment-515246 Share on other sites More sharing options...
mechohaulic Posted November 15, 2022 Share Posted November 15, 2022 don't recall a stud turning that much in torquing process. when "book"says back off 1/2 turn , a lubed nut shouldn't tighten stud the full half turn back. for conversation sake, next engine you build , mark top of stud = check movement - let me(us) know. I ALWAYS took an air hose to each stud location before installing a slightly lubed stud. in most cases (when possible) engine always came back for retorque Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/8/#findComment-515247 Share on other sites More sharing options...
Craig N Posted November 15, 2022 Author Share Posted November 15, 2022 What would be the proper lube to use for the studs? Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/8/#findComment-515248 Share on other sites More sharing options...
mechohaulic Posted November 15, 2022 Share Posted November 15, 2022 also I was never that critical of the 1/2turn. there was always a plus-minus. another plus of the GOOD DAYS :: didn't have a sensor telling a computer == hey theres a stud on head # one that has a head stud 1/2 pound off on torque. did a slant 6 cummins having corner studs at 325 lbs . didn't have concern if the studs moved ;;LOL 1 Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/8/#findComment-515249 Share on other sites More sharing options...
mechohaulic Posted November 15, 2022 Share Posted November 15, 2022 as an old man i used clean motor oil. todays technical world must have new and improved lubes Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/8/#findComment-515250 Share on other sites More sharing options...
mowerman Posted November 16, 2022 Share Posted November 16, 2022 Maybe a little off subject but I can’t believe the miles were getting these days without pulling anything apart and fedex only services them every 40,000 miles Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/8/#findComment-515253 Share on other sites More sharing options...
mowerman Posted November 16, 2022 Share Posted November 16, 2022 I’m told it’s the new and improved oils 1 Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/8/#findComment-515254 Share on other sites More sharing options...
Joey Mack Posted November 16, 2022 Share Posted November 16, 2022 A light dip in 15W40 Is what I was taught and on some others, 30W... not to much, so as not to hydraulic lock them up before final torque.. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/8/#findComment-515257 Share on other sites More sharing options...
Joey Mack Posted November 16, 2022 Share Posted November 16, 2022 Interesting statement Bob.. I have no clue about todays engines, and longevity.. I just remember Million mile E-7's and have seen many E-Tech's as well... How about the exhaust system's on the engine's you are talking about? Just curious... jojo Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/8/#findComment-515258 Share on other sites More sharing options...
Craig N Posted November 16, 2022 Author Share Posted November 16, 2022 28 minutes ago, Joey Mack said: Interesting statement Bob.. I have no clue about todays engines, and longevity.. I just remember Million mile E-7's and have seen many E-Tech's as well... How about the exhaust system's on the engine's you are talking about? Just curious... jojo Oh man, I haven’t seen anything with DEF run better than the old stuff. We’ve got a loader at work that just failed yesterday in the middle of a cargo ship cleaning out the bottom of one of the holds. What went? The DEF fluid pump. What went last time it failed in the middle of a hold cleanout? The DEF sensor in the bottom of the tank. These ships are so expensive to unload and a hiccup like this costs 10’s of thousands of dollars. Cranes, loader rentals, fixing the broken loader, demurrage for the ship sitting idle etc. Such a hassle. Yet all of our old iron is getting shipped over seas. It’s maddening. I see so many nice old r models and old cat excavators/loaders sitting in the port waiting to get loaded on the next car ship that gets sent to South America. Sad. 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/8/#findComment-515261 Share on other sites More sharing options...
mowerman Posted November 16, 2022 Share Posted November 16, 2022 1 hour ago, Joey Mack said: Interesting statement Bob.. I have no clue about todays engines, and longevity.. I just remember Million mile E-7's and have seen many E-Tech's as well... How about the exhaust system's on the engine's you are talking about? Just curious... jojo Well all of our def engines are getting close to 500,000 but all of the deaf tank harnesses have taken a shit at one time and they have all been changed but we’ve got trucks that have 7-8 hundred thousand miles on them still running untouched without DEF ,,, They’re all 400 Cummings 2 Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/8/#findComment-515262 Share on other sites More sharing options...
mowerman Posted November 16, 2022 Share Posted November 16, 2022 Years back we had to drop the pan and do rods and mains after two or 300,000 Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/8/#findComment-515263 Share on other sites More sharing options...
Popular Post theakerstwo Posted November 16, 2022 Popular Post Share Posted November 16, 2022 Some times on a cummins 335 by 200,000 it need a set of brgs or worst.On all engines oil filter systems got much better as well as oil. On a 335 cummins and even a FFC engine a oil system was designed to by/pass the filter with a 15 lb differengal by/pass valve spring.This means if the out put of the filter was less than 15 lbs of the input then the by/pass valve would open and let enough pressure by/pass the filter so the engine would get full pressure.The problem with this is ever time the engine is started the oil can by/pass the filter and what ever the cold oil picks up from the pan to go thru the system.When the Big can engines came out the oil pump had a 120 lb psi relieve valve in the pump and a better filter element that will not destroy its self with the higher pressure.The filter now has a 55 lb pressure differential by/pass valve spring on it and this way the pump almost makes all oil go thru the filter at start up.But after the oil enters the engine there is a sense line connected to the pump from the oil galley and this way the pump will even its self out to filter all oil an maintain enough pressure to fed the system which is about 40 psi. 800000 is normal now for brgs on most engines.There is other things that help a engine of today get more life also like engine timing. 3 Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/8/#findComment-515286 Share on other sites More sharing options...
Craig N Posted November 17, 2022 Author Share Posted November 17, 2022 Well, got the front head off. Cylinder 3 is ugly. Real ugly. Piston is rotten? I’m trying to upload a pic of what it looked like before I vacuumed it off Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/8/#findComment-515304 Share on other sites More sharing options...
Craig N Posted November 17, 2022 Author Share Posted November 17, 2022 (edited) What the hell is that on the piston? Looks like shavings almost. Wasn’t too coarse when I touched it. Looks like the mice chewed the top of the piston. Gah. Frustrated. Edited November 17, 2022 by Craig N Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/8/#findComment-515305 Share on other sites More sharing options...
Joey Mack Posted November 17, 2022 Share Posted November 17, 2022 Good thing you didnt force it to turn over.. The liners may still be ok.. any chips on the top of the liner, where the fire ring would go? Keep it comin'... jojo 1 Quote Link to comment https://www.bigmacktrucks.com/topic/70672-pulling-injectors-on-a-673/page/8/#findComment-515306 Share on other sites More sharing options...
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